Adam works as an Incident Handler for Umbrella Inc. He has been sent to the California unit to train the members of the incident response team. As a demo project he asked members of the incident response team to perform the following actions:

✑ Remove the network cable wires.

✑ Isolate the system on a separate VLAN

✑ Use a firewall or access lists to prevent communication into or out of the system.

✑ Change DNS entries to direct traffic away from compromised system

Which of the following steps of the incident handling process includes the above actions?